A method for expanding the scope of grouting reinforcement for filling and semi-filling karst

A grouting reinforcement and grouting technology, applied in the field of stratum grouting reinforcement, to achieve the effect of increasing the diffusion radius, expanding the grouting radius, and expanding the grouting reinforcement range

Inactive Publication Date: 2022-03-04
张永刚 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for expanding the scope of grouting reinforcement for filling and semi-filling karst, so as to solve the problem of reducing high-density drilling and expanding the scope of grouting reinforcement

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  • A method for expanding the scope of grouting reinforcement for filling and semi-filling karst
  • A method for expanding the scope of grouting reinforcement for filling and semi-filling karst
  • A method for expanding the scope of grouting reinforcement for filling and semi-filling karst

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Embodiment Construction

[0037] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered by the claims.

[0038] see Figure 1 to Figure 9 , a method for expanding the scope of grouting reinforcement for filling and semi-filling karst, this embodiment is applied to karst grouting reinforcement.

[0039] A method for expanding the scope of grouting reinforcement for filling and semi-filling karst, see figure 1, including a grouting pipe 1, a grouting barrel 2 and a grouting valve 3; the bottom of the grouting barrel 2 is provided with a bottom plate 2.1 and a top plate 2.2, and the bottom plate 2.1, the top plate 2.2 and the side wall of the grouting barrel 2 form a grout containing chamber ; One end of the grouting pipe 1 passes through the top plate 2.2, and is used to deliver grout to the grout chamber between the top plate 2.2 and the bottom plate 2.1; the...

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Abstract

The invention provides a method for expanding the scope of grouting reinforcement for filling and semi-filling karst. Lower the assembled grouting equipment into the bottom of the grouting hole, and the grouting pipe and the upper part of the grouting bucket are above the ground; for grouting, inject grout into the grouting cavity of the grouting bucket through the rigid grouting pipe, The grout makes the grouting valve protrude under pressure and penetrate into the formation. The first end of the outer sleeve is close to the inner wall of the grouting bucket. The through hole of the sealing slide plate, the first slurry flow hole of the outer sleeve, the second slurry flow hole of the outer sleeve, the first slurry flow hole of the interlayer sleeve, the second slurry flow hole of the interlayer sleeve, the inner drill core slurry flow hole and the grouting diffusion hole Connected, the grout flows into the formation to be reinforced by grouting. The invention greatly reduces the drilling workload of construction personnel, and at the same time expands the scope of grouting reinforcement. The expansion and contraction of the grouting valve can be realized only by adjusting the grouting pressure, and the operation is simple and convenient.

Description

technical field [0001] The invention relates to the technical field of stratum grouting reinforcement, in particular to a method for expanding the grouting reinforcement range for filling and semi-filling karst. Background technique [0002] Karst, also known as karst, is characterized by the chemical corrosion of water on soluble rocks (calcium carbonate, sulfate, halogen rock, etc.), and includes the mechanical erosion and collapse of water, as well as the carrying out, transfer and redeposition of substances. A collective term for comprehensive geological processes and the phenomena that result from such processes. [0003] The karst area is a geological disaster area, and there are a large number of dissolved soil caves underground. For the excavation of pile foundations, foundation pits, and underground tunnels, it is necessary to pre-treat the dissolved soil caves to ensure construction and operation safety and avoid dissolved soils. Caves induce safety accidents such...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/12
CPCE02D3/12
Inventor 张永刚檀俊坤刘志新杨思凡张震蒋泽龙
Owner 张永刚
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